Photo: Marc RieraCC BY 4.0via iNaturalistresized / cropped
Long Bristle Sandbur Plant Care
Cenchrus longisetus M.C.Johnst.
Updated · Sources · How we source care data
With its long, slender green leaves that can reach up to a foot in length, this plant originates from Sub-Saharan Africa. Plant collectors are drawn to Cenchrus longisetus for its unique texture and graceful appearance, making it a desirable addition to any collection.
Every 7–14 days
Full sun
65–85°F
40–70%
At a glance
How do you care for Long Bristle Sandbur?
Water Long Bristle Sandbur every 7–14 days, letting the top layer of soil dry out between waterings, and give it full sun. It prefers temperatures of 65–85°F (18–29°C) and 40–70% humidity. Fertilize it every 8 months during the growing season.
Where Is the Long Bristle Sandbur Native To?
- Algeria
- Angola
- Bahrain
- Benin
- Botswana
- Burkina Faso
- Burundi
- Cameroon
- Cape Verde
- Central African Republic
- Chad
- Côte d'Ivoire
- Djibouti
- DR Congo
- Egypt
- Equatorial Guinea
- Eritrea
- Eswatini
- Ethiopia
- Gabon
- Ghana
- Guinea
- Guinea-Bissau
- Kenya
- Kuwait
- Lesotho
- Liberia
- Libya
- Madagascar
- Malawi
- Mali
- Mauritania
- Morocco
- Mozambique
- Namibia
- Niger
- Nigeria
- Oman
- Qatar
- Republic of the Congo
- Rwanda
- Sao Tome and Principe
- Saudi Arabia
- Senegal
- Sierra Leone
- Somalia
- South Africa
- South Sudan
- Sudan
- Tanzania
- The Gambia
- Togo
- Tunisia
- UAE
- Uganda
- Yemen
- Zambia
- Zimbabwe
What Is the Long Bristle Sandbur?
Long Bristle Sandbur (Cenchrus longisetus) belongs to the Poaceae family within the Cenchrus genus. Long Bristle Sandbur is native to northeastern Africa and parts of the Arabian Peninsula, and.
Long Bristle Sandbur displays an upright, clumping grass growth habit, reaching up to 3 ft tall with a spread of approximately 2 ft. Long Bristle Sandbur produces small spikelets in terminal panicles.
Leaf size: approximately 12 inches.
How Often Should You Water a Long Bristle Sandbur?
Cenchrus longisetus requires watering every 7–14 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.
Watering Frequency
Every 7–14 days
Let soil partially dry between waterings
What Light Does the Long Bristle Sandbur Need?
Long Bristle Sandbur thrives in full sun.
Light Requirement
Full sun
What Temperature and Humidity Does the Long Bristle Sandbur Prefer?
Cenchrus longisetus grows best at temperatures of 65–85°F. Long Bristle Sandbur prefers humidity levels of 40–70%.
Temperature
65–85°F
Humidity
40–70%
What Soil Mix Works Best for a Long Bristle Sandbur?
Well-draining sandy soil with good aeration. Good drainage is essential for Long Bristle Sandbur to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Long Bristle Sandbur?
Feed Long Bristle Sandbur every 8 months during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.
Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.
Fertilizing
Every 8 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a Long Bristle Sandbur?
Repot every 1-2 years in early spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.
How Do You Propagate a Long Bristle Sandbur?
Long Bristle Sandbur can be propagated through seeds. Similar propagation techniques also apply to pearl millet plant care, which shares the same genus.
Is the Long Bristle Sandbur Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Long Bristle Sandbur, so we can't confirm whether it is safe for cats and dogs. Keep pets from chewing it as a precaution.
This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.
See all plants toxic to cats and plants toxic to dogs.
What Pests and Diseases Affect the Long Bristle Sandbur?
Long Bristle Sandbur is susceptible to aphids, grasshoppers. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.
Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.
What USDA Hardiness Zone Does the Long Bristle Sandbur Need?
Long Bristle Sandbur grows outdoors in USDA Zone 9a – 10b. It survives winters down to planting zone 9a. Long Bristle Sandbur is native to northeastern Africa and parts of the Arabian Peninsula, and. In cooler regions, grow Long Bristle Sandbur as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 9a – 10b
Keep exploring plants
Long Bristle Sandbur is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Cenchrus genus — compare its care with other Cenchrus species on PlantoScan.
Cenchrus is part of the Poaceae plant family — browse all Poaceae genera and species.
Long Bristle Sandbur thrives in bright light and direct sun — see other bright-light plants.
More Cenchrus Species
Other Cenchrus species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Cenchrus longisetus M.C.Johnst., family Poaceae (first published in Sida 1: 182 (1963)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Long Bristle Sandbur, so we can't confirm whether it is safe for cats and dogs. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
- Photo: Marc Riera, CC BY 4.0, iNaturalist — original.
- Hardiness zone: USDA Zone 9a – 10b, estimated from the plant's typical growing conditions.
- Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.
Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.
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